Lock-stitch shoe-sewing machine.



F. LA GHAPBLLB.

LOCK STITCH SHOE SEWING MAGIHNL. APPLICATION FILED MAY 24, 1905.

1,048,549. Patented Dec. 31,1q12.

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APPLICATION TILED MAY 24. 1905.

Patented Dec. 31, 1912.

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Patented Dec. 31, 1912.

F. LA CHAPBLLE. LOCK S'ilTCH sans SEWING MACHINE.

APPLICATION TILED MAY 241905.

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LOCK STITCH SHOE SEWING MACHINE.

APPLICATION FILED MAY 24, 1905.

1,048,549. Patented Dec.31,191-2.'

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F. LA CHAPELLE. LOOK STITCH SHOE SEWING MACHINE. APPLIOATION IILED MAY 24, 1905.

1,048,549. Patented Dec.31, 1912.

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LOCK STITCH SHOE SEWING MACHINE. APPLICATION FILED MAY 24,1905.

1,048,549. Patented Dec.31, 1912.

8 -SHBETS-SHEET 8.

\M QQ Q 2 UNrrEn STATES PATENT, orsronease; Ila cHgiPisLtE, or ASHLAND, MASSACHUSETTS, ASSIGNOR T UNITED SHOE iVIACH INER-Y'COMPAN r, or PAT RsoN, NEW JERSEY, A CORPORATION or NEW JERSEY LOCK-STITQH SHOE-SEWING MACHINE.

Tonia. :w/mm it may concern Statel' of "hlassachusetts, have invented cert'airr new and useful Improvements in Look- Stitch Shoe-Sewing Machines, of which the fol'lhwing is a specification.-

This inventioirrelates to lock-stitch shoesew-ihgmachines, and has for its object to providecertain new and simplified forms of anecha'nisnidesigned to render the machine inoieefficient than those heretofore employed; and to improve the quality of the work performed thereby. y'Themachine herein illustrated is in gen- "erat appearance and, operation somewhat 'sim'ilaij to those usually employed, and illus- "t'ra'tedin Letters Patent No. 412,703, grantfied October 8th. 1889, to French and B'Ieyer. f The "principal features of the present injientio'ti -are the shuttle with ,driving" and locltirrg' "mechanism therefor. The shuttle, 'uiili'kfitheoscillatory shuttle usually em- "ploy'ed'intimachine "of this type, operates an intermittent uni-direction rotary .movement. By reason of this movement the shuttle requires "much less driving power than the'oscillatory shuttle,it operates more q uietly, .nd'perniits'the machine to be operated at agre'ater rate of speed.

. Other improvements are hereinafter speciand illustrated upon the accompanyine fd'rawings forining a part of this specifica 1 Ofthe said drawings :.-Fip;ure 1 is a front elevation of lock-stitch shoe-sewing inaf'chine having the hereindescribed features o f 't he invention. Fig. 2 is a left side elevarni rius the driving pulley. Fig. 3 is a .side elevation] Fig. l is a vertical sectioii the, shuttle and needle mecha- 1 G 5 is a horizontal section of the needle and awl carriers. Fig. 6 is a verticalf section of the and and spreader mecha- 7 is a'plan of the looper 1nerlia nism, Fig. 8 is a side elevation of the loop er mechanism.

7 Fig. '9 is a side elevation/of the worki 'est and lOCiIlng mechanism therefor. Figsf 10 and 1-1 are diagrammatic views of the thrcm'l-ineasurin device. Fig. 12 is a front elevation of the .gsh uttle. Fig. 13 is a vertical section therei "Fig. 1% is a section on the line lig li of Fig. 12. Fig.1?) is a perspective Specification of Letters Patent.

Patented Dec .31, 1912.

Application filed May 24, 1905. Serial No. 261,956.

view of the shuttle thread-guide. Fig. 16

is a vertical section of a portion of the feeding mechanism.

The same reference characters indicate the same parts or features in all the drawings.

The machine herein illustrated comprises the usual head 10 mounted upon a standard 11 and having a driving shaft 12, pulley l3, wax-pot 1:: and steam-heating pipes.

15 is the hooked oscillatory needle clamped in a toothed needle-carrier 16 which is oscillatably mounted on a stud l7 projecting from the head 10, (see Fig. 4). -'The toothed carrier intermeshes with and is driven by a gear segment 18 pivoted upon a stud. l9 and having a trundle-roll :20 which cooperates with an operating cam 21 .afiixed' to y the shaft 12.

AwZ.-22 is the oscillatory awl which cooperates with the needle; The awl is clamped to a toothed carrier 23 oscillatably mounted upon a hollow stud 2i projecting from a carriage 25 andinto which the neodie-stud 17 projects, (See Fig. 5). The

studs 17 and 2st are independently mounted and yet are concentric enabling the carriers 16 and 23 to oscillate upon the same axis.

The carriage 25 which carries the awl is mounted in a guide 26 on the head and adapted to be reciprocated laterally to feed the work. lVhen so reeiprocated, the awl and the stud 2i slide bacl; and forth upon the stud 17. The toothed awhcarrier 23 intermeshes with and is oscillated by a gearsegment 27 pivoted upon a stud 2S and having a trundle-roll 29 which cotiperates with an actuating cam 30 secured upon the shaft 12. lhe face of the segment is sui'liciently broad maintain operative engagement with the awl-carricr which reciproeates axially with relation thereto.

Feed-3i is a lever pivoted to the head by a stud 32 and having at its free end a trundle-roll in operative engagement-with a cam 3i secured upon the shaft 35 is a stud connecting the lever 31 and the feeding carriage Said stud has a flattened body 36 which is adapted to slide but not turn in a radial slot 3? in the lever 31 a flange 38 between the lever and the carriage. and a cylindrical end provided with a flattened bushing "l0 which is adapted to slide in a slot ll in the carriage, (see Fig.

16). A nut 42 on the-outer end ofthe stud serves to steady it, but not to bind it in any way to the lever 31. v

43 is a feed-regulating handle pivoted by a stud 44 to the heady 25, and having a slot 45 occupied by the-flange38 of the stud 35.

The lever 3-1 receives from the cam 34 a uniform movement which is transmitted to the carriage 25 by the stud 35. but the studmay be manually shifted in the slots 37 and 41 by means of the handle 43 so as to be moved to a greater orless extent by the lever, and move the carriage correspondv ingly.

The needle-thread a: is drawn'froin the waxpot 14 over a tension truck'46, under an idle roll 47, through a tube 48, under the pulling roll 49, the measuring roll 50, take-up rolls 51, 52, and through the looper 53 and work-rest 54 to the needle.- The work-rest and the measuring roll 50 are both carried by a supporting member" 55 oscillatably mounted'upon a stud 56 in the head 10. The sole a of a shoe to be sewed is inserted between the work-rest 54 and a presser-foot 57 mounted on the carriage 25. The work-rest is normally held upward by h a rod 58 pivoted tothe support 55 and held thread at on either side of said roll in Fig; 10, that when the roll starts inthe direction:

- as the roll move forward by a 5 ring 59. The work-rest may be manually depressed from the resserfoot57 bymeans of a handle 60 a xed to I the support 55 to admit the sole, and whenreleased, so that thespring 59 presses the .work-rest against thesole, the positions of the work-rest and the measuring-roll 50 are determined by thethickness of the sole. The vposition ofdthe roll 50 relatively to the roll 49 compensates for the thickness of the sole in measuring the threadfor each stitch, as hereinafter explained.

The roll 49 is mounted on one end of a lever 61, (see Figs. '1, 2 and 3) which is fulerumed upon a fixed stud 62 and has at its other end a trundle-roll 63 inoperative engagement with a earn 64 secured upon the shaft 12. The cam 64 oscillates the lever 61 so as to move the pulling roll 49 uniformly back and forth once for each stitch, as indicated by full and dotted lines in Figs. 10 and 11.

The full lines indicate the normal position of the roll 49, and it willbe observed, by reason of the angularity of the of the arrow the-thread is drawn from the supply approximately as fast as the roll moves. As the roll advances however, the angularit-y of the thread constantly decreases so that near the end of the stroke the thread is being drawn'nearly twice as fast The quantity of thread thus drawn is snllicient for a stitchin the sole being sewed. but if a thicker sole such as that shown in Fig 11 be inserted between the pressenfoot and the work-rest,

it causes the pulling-roll 49 to draw a correspondingly greaterquantity of thread. It will be observed that the position 'ofthe measuring-roll 5O relativelyto the pullingroll 49 in Fig. 11, causes a decrease in the angularit-y of the'thread extending around the roll 49. By reason of this decrease in the angularity of the thread the pulling roll 49, when it starts forward, draws the thread approximately one 'and one-half timeses fast-as the roll '.-itse'lf moves, in creasing to twice as fast as it advances. The work-rest is locked during theffeeding of the work by a pawl 65 pivoted upon a fixed stud 66 and held by a spring 67 in engagement with a segmental rat-chetq68 .afiixed' to the supporting member 55;

The presser-foot which-is instrumental in feeding thework is fulcru ned upo'na Stud 69 carried by the carriage 25, and has at its upper end aroll 70which is engaged by a cam '71 on the shaft 12.- Justprevi l jto the feeding movement of the --carriage 25,-

the cam 71 rocks the presser foot; against thesole of the shoe which isQ- support'ed byjthe work-rest, looked as described; {-The carriage then moves, carrying thefpresser-foot and the awl to the left, aftenwhich the cam 71 releases the presser-foot, andfla ycam' f72 formed integrally therewith, engages a roll 73 on the pawl 65 and dlsengages' said pawl from the ratchet 6S, releasing the 'workrest. The carriage is then returned to the right and the work-rest; pies'ser-foot locked as before. 1

Loopen The hope-r 53 whichavinds thread around the}bar'b"fof theneedleis affixed to the forward end of'a rod 74. --Said rod is carried by and movable radially in :lh

arm 75-whi'ch is adapted to oscillate later-' ally on a pivot 76 mounted in the head. A

' bell-crank lever- 77 alsopivoted to the head by a stud 78 is connected by a pivoted -link 72 to a bloclg 8O whicl is.\'a dapted to v slide n a' jm l l 1 t arm 75. The rear end of the rod 74 1s pinned in the block 80 and movable radially therewith but prevented from turn the looper to describe a nearly circular motion around the needle. (see Fig. 7).

S/'mttIe.-"llie shuttle, indicated by 100,

which is not completely circular,comprising about 270 degrees of a circle, is installed and adapted to rotate in a shuttle-race 87,

in which it is guided by a peripheral flange 10] The shuttle-race is'made sufiiciently deep to contain the head of a rotary shuttie driver 89 mounted in a suitable bearing concentric to the shuttle. and to provide an;- ple space between the shuttle and said head for the passage of the needlethread aid driver is in the form of a shaft and carries a pinion 90 loosely mounted on its rear end. (see Fig. 4). Between the ends of the driver is a rigid collar J1 of which the rear face is inclined like a single ratchet-tooth to form an abutment 92. The forward face of the pinion,is similarlv formed. having an abutment 93 adapted to engage the abutment ouslv raised our of the notch to release the 92, and when rotated to rotate the driver. The front face of the pinion constitutes a ratchet-toothed clutch. or clutch member. which coacts intermittently with the complemental face of the collar. or other clutch member, on the driver. it is evident that. while the clutch and the pinion are formed in one piece, this is not necessaia although convenient. The head has an inclined nose or extension 9% which projects across an undercut face 102 on the heel 103 of the shuttle, and when rotated by the pinion 90.

said extension abuts against the heel and so rotates the suuttle. The extension inclined for the purpose of deflecting the needle-thread and casting it oil after the shuttle has passed through it. as hereinafter described. and the face 102 is so formed as to leave a clear space between it. and the extension for the passage of the thread therebetween. lfhe outward inclination oi the finger or extension 9% of great benefit in the casting oil of the loop of needle thread, since it. guides the loop axially and yet outwardly from the shuttle.

Shuttle-actuating 'TIZUfiIZGH/I S'I/Z.-"95 crown gear segment on an arm 96 mounted to oscillate in operative engagement with the pinion 90. about a stud UT. P aid aria Carries a roll 98 in operative engagement with a cam 99 by which it is actuated to i A 4 shank secured in th shuttte outside the peripher of the bobbin. The thread-letuler is By reason ot' the in J2 and J3 on oscillate the pinion ao. clined tat-es ot the abutme the collar and pinion. the pinion when oscilf lated to the right is forced toward the rear end of the driver. as in Fig. l. in tead oi" rotating it. Then p evious to being est-illated to the left the pinion is moved int engagement with the collar by means of a cap 101'- which adapted to slide in and out of the end of the driver. P aid rap is engaged by a finger 1 7 on a lever i o falcruined upon an eccentric stud 1%)? join-hated in a boss l la on the head it has a roll 109. which is hel in engaufeznt x with a cam 110 by a, spring 111 attach-no to the rear end of the lever. and wh n sail cam permits the roll to he dwresse-i by the spring. the cap lot -antl 'pinton'arc thrust forward by the linger 1'05. 'lhe lever ltlti also carries a finger 112' which is adapteti to enter a notch 11) in the periphery of th head 88 and so lock it. The movement of driver. A pin 133 on the head 88 prevents the shuttle from running away from the head. The eccentric stud 107 on which the lever 106 is talc-ruined provides means whereby the finger 112 mav be actuated to lock the driver without affecting the pinion 90. 11+ an arm clamped tlpon'the opposite end of the stud 107. and connected by a pivoted link 113 to an arm 11h t'ulcruniel upon a stud 114' and having a roll 113 which is held against a cam 119 b v a spring 120. t the conniletion oi motion imparted to the sluitt e. and just prior to the herein- .betore described locking operation of the lever 1M3. the can! 119 permits the spring 12 to rock the arm 11(3 h-rward. This SUSQS a partial rotation of the eccmtric stud 1th which l(?\\'tl' ti forward end of the le er 1 n witimut causing any perceptible forward or bacl .ard univement of the finger 1 13. and so cause-- tl linger 112 to seek the notch 11 3 bel'taev b rocked th reinto by the positive action or the cam 110.

The shuttle 10%) has a c vlindriral hamber 121. for the reception or a bobbin 1:22. and a stint 1:23 therein for the bobbin to turn on.

Fig. ll {:nided from the exterior of the f c-il on the bobbin to a point on the avis of the shuttle hr at thread-leader v124 having its Ml arranged with re ard to the bobbin that the thread 3 passing therethrough. may be caused to rotate the bobbin in the opposite direction to that in winch the shuttle rotates. As the shuttle is rotated to the left. as indicated by the arrow in IlQ'. 1!. me nose thereof enters the loop of thread 0; upon the The ever 1 -13 g needle and the spreader 126. and so removes the loop from said needle and f. e I

spreader. During the passage of the shuttle through the loop of thread .13. the inner side I oil the loop passes between the shuttle and l the driver-howl tinallv striking the inclined extensien 9. rv which it lz tltlltclfd and cast 011'. leaf spring 12? extending front a holder 12 s adapted to bear uponfi.

i washer 129 over the bobbin and so exactcl I tempting to set forth all of the forms in which it may be made, or all of the modes of its use, I declare that what I claim is 1. In a lock-stitch shoe-sewing machine, a rotary shuttle, a rotary driver for rotating said shuttle, a clutch member fast on said driver, an oscillatory and axially movable clutch member adapted when rotating in one direction to operatively engage and rotate said driver and to rotate independently thereof during its retrograde movement, means for oscillating said clutch consisting of a pinion and a segment in contact intermeshed relation therewith, means for causingsaid clutch to operatively engage said driver, and movable means for intermittently engaging and locking the driver independently of said clutch members.

2. In a lock-stitch shoe-sewing machine,a

' rotary shuttle, a rotary driver for rotating said shuttle, an oscillatory ratchet toothed clutch adapted when moving in one direction to operatively engage and rotate said driverand to move independently thereof during its retrograde movement, means for oscillat ing said clutch, means for locking the driver during said retrograde movement of the clutch, and means actuated by said locking means for causing said clutch to operatively engage said driver.

3. In aloek-stitch shoe-sewing machine, a rotary shuttle, a rotary driver for rotating said shuttle, an oscillatory clutch so toothed that it is adapted when moving in one direction to operatively engage and rotate said driver and to move independently thereof during its retrograde movement, means for oscillating said clutch, a notch in said driver,

a member adapted to enter said notch, and to move said clutch into operative engagement with said driver and leave said notch substantially simultaneously, and means for moving said member to occupy said notch during retrograde movement of said clutch and to anove said member out of said notch at the completion of said retrograde movement.

4. In a lock-stitch shoe-sewing machine, a rotary shuttle, a rotary driver for rotating said shuttle, an oscillatary longitudinally movable clutch adapted when rotating in one direction to operatively engage and rotate said driver and to rotate independently thereof during its retrograde movement, means for oscillating said clutch, a notch in said driver, a clutch moving and driver locking member adapted to release said clutch and enter said notch substantially simultaneously, and to leave said notch and move said clutch into engagement simultaneously, and means for actuating said member.

5. A lock-stitch shoe-sewing machine comprising a needle, a rotary shuttle adapted to take the loop from the needle, a shuttle-race, and a rotary driver having its axis atright angles to the plane of rotation of the shuttle and having an extension outwardly inclined relatively to the axis of the driver as at St adapted to abut against the heel of the shuttle and to cast off the looped thread, there being a free space between the shuttle and the driver for the passage of the thread.

FRED LA CHAPELLE.

\Vitnesses Manor's B. MAY, C. C. STECIIER. 

